Zilog Z80380 Bedienungsanleitung PDF herunterladen (Seite 165)

5-131

Z380

™

USER'S MANUAL

ZILOG

DC-8297-03

POP

POP ACCUMULATOR

POP dst dst = AF

Operation: F ← (SP)

A ← (SP+1)

SP ← SP + 2

if (LW) then begin

SP ← SP + 2

end

The contents of the memory location addressed by the Stack Pointer (SP) are loaded into

the destination in ascending byte order from ascending address memory locations. For this

instruction, the Flag register is the least significant byte, followed by the Accumulator. The

SP is then incremented by two (by four in the Long Word mode). Note that in the Long Word

mode only one word is read from memory, although the SP is in fact incremented by four.

Flags: S: Loaded from (SP)

Z: Loaded from (SP)

H: Loaded from (SP)

V: Loaded from (SP)

N: Loaded from (SP)

C: Loaded from (SP)

Addressing Execute

Mode Syntax Instruction Format Time Note

POP AF 11110001 2+r L

1 2 ... 160 161 162 163 164 165 166 167 168 169 170 ... 267 268

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Zilog Z80380 Bedienungsanleitung Seite 165